: to an infinite or seemingly infinite extent or degree
an infinitely large number
It is clear that when an infinite number of positive quantities are added, the result will be infinitely large unless the quantities diminish in size to zero.—Dan Kalman
… we know that the world is infinitely more complicated than the child thinks.—Robert Penn Warren
… in learning about the amazing complexity of the computer, we come to appreciate the infinitely more amazing complexity of the human brain …—Alex Raskin
He swivels his head almost 360 degrees, like a Japanese puppet-balloon held aloft on a stick. The face is infinitely old, infinitely wise, very catlike.—Maxine Kumin

Examples of infinitely in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Li has bewitched the fashion set with his eye for color-blocking—which is almost Lego-like, but infinitely chicer—and his topsy-turvy take on American sportswear. — José Criales-Unzueta, Vanity Fair, 21 Oct. 2026 Words can inflict damage, but actions can do infinitely worse. — Voice Of The People, New York Daily News, 14 Oct. 2026 In other words, the hat is a shape that can infinitely tile, or cover, a 2D surface without ever creating a repeating pattern. — Rachel Crowell, Scientific American, 12 Oct. 2026 Andy Muschietti’s infinitely better and sadder 2013 film, Mama, also starring Chastain, had similar ideas running through it. — Bilge Ebiri, Vulture, 9 Oct. 2026 See All Example Sentences for infinitely

Word History

Etymology

Middle English infynytly, from infynyt infinite entry 1 + -ly -ly entry 2

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of infinitely was in the 15th century

Cite this Entry

“Infinitely.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/infinitely. Accessed 27 Oct. 2026.

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